Designation:D8151−19´1StandardPracticeforObtainingRainfallRunofffromUnvegetatedRolledandHydraulicErosionControlProducts(RECPsandHECPs)forAcuteEcotoxicityTesting1ThisstandardisissuedunderthefixeddesignationD8151;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—Eq4waseditoriallycorrectedinMarch2020.1.Scope1.1Thispracticeestablishestheguidelines,requirements,andproceduresforobtainingrainfallrunoffofunvegetatedrolledandhydraulicerosioncontrolproducts(RECPsandHECPs)duringbench-scaleconditionsfromsimulatedrainfalltobesentoutforacuteecotoxicitytesting.1.2Thispracticeobtainsunvegetatederosioncontrolprod-uct(ECP)runofffromrainsplash-inducederosionunderbench-scaleconditionsusingbench-scalecollectionprocedures.1.3Units—ThevaluesstatedinSIunitsaretoberegardedasthestandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026,unlesssupersededbythistestmethod.1.4.1Theproceduresusedtospecifyhowdataarecollected/recordedandcalculatedinthestandardareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatgenerallyshouldberetained.Theproce-duresuseddonotconsidermaterialvariation,purposeforobtainingthedata,specialpurposestudies,oranyconsider-ationsfortheuser’sobjectives;anditiscommonpracticetoincreaseorreducesignificantdigitsofreporteddatatobecommensuratewiththeseconsiderations.Itisbeyondthescopeofthesetestmethodstoconsidersignificantdigitsusedinanalysismethodsforengineeringdata.1.5Thispracticeoffersasetofinstructionsforperformingoneormorespecificoperations.Thisdocumentcannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgment.Notallaspectsofthispracticemaybeapplicableinallcircumstances.ThisAST...
